FSC 6645 — Time Measuring Instruments · FSG 66 — Instruments and Laboratory Equipment
Government record, cited
Also searched as6645-01-065-9502 ·
6645010659502 ·
NIIN 010659502 ·
01-065-9502 ·
FSC 6645 Time Measuring Instruments
Nearby stock numbers← 6645-01-065-7036 Meter, Time Totalizing
·
6645-01-065-9646 →
Features
Crystal Clock — FSC 6645
General Characteristics Item Description: 10MHZ,5MHZ,1MHZ FREQUENCY; M20 TO 50 DEG C OPERATING TEMP; 115/230VAC; 24 HR DIGITAL READOUT; 14 IN. LG,8.5 IN. H,8.5 IN. W MHz
Identification
NSN: 6645-01-065-9502
NIIN: 010659502
FSC: 6645 — Time Measuring Instruments
FSG: 66 — Instruments and Laboratory Equipment
General Description
The Crystal Clock, cataloged under National Stock Number 6645-01-065-9502, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
6645-01-065-9502
Item Name
Crystal Clock
FSC / FSG
6645 / 66 — Time Measuring Instruments
Status
ACTIVE
General Characteristics Item Description
10MHZ,5MHZ,1MHZ FREQUENCY; M20 TO 50 DEG C OPERATING TEMP; 115/230VAC; 24 HR DIGITAL READOUT; 14 IN. LG,8.5 IN. H,8.5 IN. W MHz
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
1210D-03
3/9Design control — primary reference
Adatum Inc Div Austron
No interchangeability data on file.
Other items in FSC 6645 — Time Measuring Instruments
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6645-00-001-1256
6645-00-001-1256 · Item name not on file
6645-00-001-4498
6645-00-001-4498 · Item name not on file
6645-00-001-4584
6645-00-001-4584 · Item name not on file
6645-00-001-9400
METER,TIME TOTALIZING
6645-00-003-0327
6645-00-003-0327 · Item name not on file
6645-00-003-0328
6645-00-003-0328 · Item name not on file
6645-00-003-0337
6645-00-003-0337 · Item name not on file
6645-00-003-0338
METER,TIME TOTALIZING
Frequently Asked Questions
What is NSN 6645-01-065-9502?
NSN 6645-01-065-9502 is a Crystal Clock, classified under FSC 6645, Time Measuring Instruments. Status: active.
What are the specifications of 6645-01-065-9502?
Key specifications for 6645-01-065-9502: General Characteristics Item Description: 10MHZ,5MHZ,1MHZ FREQUENCY; M20 TO 50 DEG C OPERATING TEMP; 115/230VAC; 24 HR DIGITAL READOUT; 14 IN. LG,8.5 IN. H,8.5 IN. W MHz. 1 specification is documented in the U.S. Government catalog.
Is NSN 6645-01-065-9502 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.